Winding mechanism.



J, V. CUNNlFF. wxNDl'NGMEcHANIsM. APPLICATION FILEDVMAR. 20. 1912.

Patented; June 1, 1915;;

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I. V. CUNNIFF. WINDING MECHANISM.

APPLICATION FILED MAR. 20, I9I2. l i

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J. V. CUNNIFF.

WINDING MECHANISM. APPLICATION FILED MAR. 2o. 19712.

1,141,892. PatentedJune 1, 1915.

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J. V. CUNNIFF.

WINDING MECHANISM.

APPLICATION man MAR. 2o, 19,12.

Patented June 1, 1915.

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@Mxfmz I. V. CUNNIFF.

WINDING MECHANISM.

APPLICATION FILED MAR. 20. 1912.

I Patented Junel, 1915.

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UNITED STATES PATENT OFFICE.

JOHN V. CUNNIFF, 0F FALL RIVER, MASSACHUSETTS, ASSIGNOR T0 JAMES K. LANNING, OF BOSTON, MASSACHUSETTS.

WINDING MECHANISM.

Specification of Letters Patent.

Patented Junevlt, 1915.

Application filed March 20, 1912. Serial No. 685,030.

T0 Il ir/m'm, it may concern:

Be it known that I, JoiiN kV. Ci'iNNirr, a citizen of the United States, and a resident of Fall River, in the county of Bristol and Stato of Massachusetts, have invented an Improvement in vinding Mechanism,r of which the following description, in connection with the accompanying drawings, 'is a specification, like characters on the drawings representing like parts.

This invention relates broadly to winding mechanism adapted to build up a yarn package upon a yarn receiver by laying successive la vers of yarn upon the receiver progressively from one end thereof to the other; so that said yarn `may be easily withdrawn from Isaid yarn package by draft along the axis of the. varn package; the yarn receiverbeing continuouslyy rotated so that the winding takes place continuously from beginning to eml of the formation of the yarn package.

Specifically but not exclusively the invention relates to the provision of such mechanism for use in ring spinning or twisting frames wherein the winding is carried on simultaneously and continuously with a spinning or twisting operation.

In order that the `principle of the inven-4 tion may be readily understood, I have chosen to illustrate that embodiment of my invention consisting of builder mechanism for ring spinning frames.

ln the drawings: Figure 1 is a front elevation o'f one form of builder mechanism for ring spinning frames constituting an embodiment of my invention; Fig. 2. is a view of said mechanism partially in vertical transverse section and partially in end elevation; Fig. 3 is a view in side elevation of a portion of the mechanism shown in Fig. 1, upon an enlarged scale; Fig. et isa view mainly in longitudinal section of a portion of the mechanism; Figs. 5 to 8 inclusive.

represent various stages in the building of the yarn package upon a wooden bobbin, in accordance with one embodiment of my invention: Figs. 9 and l() are diagrams representing the. turns or coils of successive conical layers of said yarn package; Fig. 11 is a side elevation of a paper tube upon which the. yarn package may be wound, in accordance with my invention; Figs. 12 and 13 are diagrammatic, sectional views representing dilferent stages in the formation of the yarn package upon said paper tube; F ig. 14, a View similar to Fig. 12, but represeiiting the yarn package wound upon a wooden bob-l bin without the formation of a -feeler bunch; Eig. 15 is a view similar to Fig. 3, but omitting certain supplementary parts hereinafter referred to; Fig. 16 is a longitudinal secticn view taken through one of the shafts of the apl'iaratus; and Fig. 17 is a diagrammatic illustration indicating certain positions of the flexible member during the. winding operation.

In yarn or thread winding mechanism to which my invention relates, the coils of .'arn arevlaid along the yarn receiver by elfecting a relatively oscillatory movement of a varii guide and the yarn receiver along the latter for a portion of its length, which'movement is generally called the traverse and the package is built by shifting the path of this relative movement progressively along the axis of the yarn receiver, which shifting is generally termed the gain In the formation of such a vai-n package a maximum diameter is reached at a point above the base diie tothe cooperative effect of the traverse and the gain; and a portion of the package from its lower end to such point of maximum diameter is termed the base"'; while. the conical form resulting at the other end of the yarn package is termed the chase, or the taper and its terminus the nose of the cop.

My invention provides means whereby the package may be wound and formed with elliciency in a winding oi spinning'or twisting machine; and particularly iu a spinning or twisting machine it furnishes means whereby the tension of the yarn in winding may be well controlledand thereby the lay of the yarn benefited. In the formation of the base of the package the invention provides means whereby the. successive layers of yarn may be so laid. one over the other, until the full diameter of the package is secured, that each bottom coil of each layer is laid safely up and above the bottom coil of the preceding layer assuming the yarn receiver to be upright and the varn to be wound thereon from the bottom upward as in the. preferred arrangement of parts of mechanism. embodyingmy invention); and while the mechanism accomplishes this broadly in the formation of the base of the package it may be arranged to continue the same winding effect throughout the entire -length ofthe package. This feature of the Windingl 1s accomplished by increasing the gain and preferably by progressively increasing the gain throughout the formation of the base of the package; and such increase of gain may be effected throughout the whole length of the package. Coperatively with this, mechanism is provided to increase the traverse throughout the formation of the base and preferably throughout the formation of the whole package.y The'result of this increase of traverse is obviously to lay each successive layer of yarn over al slightly greater extent axially of the package; and further, due tothe constant speed of the spindle or yarn receiver, and in ring frames particularly, due further to the constant speed of the feed rolls, if each traverse is effected in the same period of time (which is accomplished by giving the primary controller of the traverse movement a stroke constant in time and distance) the yarn each time will be laid in coils a little more widely separated.

A ring spinning frame constructed in accordance with my invention is provided with a ring rail and continuously rotating yarn ment to the ring rail.

My invention may be practised in many different ways. I have herein shown one form of mechanism well adapted for: the purpose. f y

Referring more particularly to the drawings and first to Figs. 1 to 4 inclusive, the

' builder cam is indicated at 2 in Fig. 1, it

being fast upon a shaft 1 supported upon the framing and driven at a preferably constant speed in any suitable manner in the direction of the arrow thereon, as from a worm shaft, itself driven by sprocket gearing from the main drive shaft of the spinning frame. Il

am enabled, because of my invention, to drive the shaft 1 and the cam 2 at a higher rate of speed than heretofore without changing the speed at which the drawing or feed rolls and the spindles are driven', and therefore to impart rmore rapid traverses to the ring rail, without,.ho\vever, changing the speed of the spindles, which are preferably driven by bands from the drum and hence independently of the ring rail. I have obtained excellent results by employing a sprocket gear having eight teeth, engaging Preferably thi,fr is effected by imparting the described traversing moveerably of vusual formation and construction,

the spindles being continuously rotated in one direction preferably by bands from the usual drum, and the yarn being delivered thereto by the usual sets of drawing rolls, not shown. Suitably mounted inthe framing of the machine upon a stud or pivot 7 is a builder lever 8 preferably having a member 9 relatively` adjustable therewith by set screw or otherwise as indicated at 9 and having a roll '10 engaging the periphery of' the builder cam 2. Connected to the buider lever S, 9, is a sprocket chain or other suitable flexible connection 11, which at its opposite end is connected to the arm 12 of a.

bell crank lever mounted in a bracket 13 r5. The bell crank lever having the arms 12 and 14, I have herein termed the ring rail lifting means for convenience of description. The form of such lifting means may l be varied Within the scope of my invention. If desired,the chains 11 may be arranged in pairs and a suitable number of sprocket chains, bell crank levers and poker arms or rods are provided to impart a steady up and down movement to the ring rail 5, and preferably a ring rail and a row of spindles are arranged at each side of the Spinnin g frame. In building the yarn package, the yarn is laid upon the receiver in a series of nested cones, each of which is formed during a traverse of the ring rail. In order that these traverses may advance along or with relation to the receiver, an incremental gain is imparted to the traversing mechanism preferably between successive traverses. The traverse is maintained undiminished, and preferably Iv impart a regular or constant uniform increase to the traverse while maintaining-the gain undiminished and preferably while progressively increasing the gain. The preferred constant increase in the traverse, which preferably is instituted at or yarn laid by the preceding traverse.` The described incrementaly increase of the gain tends safely to position the bottom coil of each layer ahead of the bottom coil of the preceding layer, and the progressive increase in the gain assists what would otherwise be a constant gain safely to effect this object.

inasmuch as each traverse is increased overv its predecessor, each traverse advances more at the top of the Wind than at the bottoml vertical cross section until the maximum diameter of the cop or other yarn package is reached. Such maximum diameter is maintained until the tip of the yarn package is reached. Thus, the increase of traverse and incremental increase in gain are constantly effective to produce and maintain a correct and advantageous forni of package. rlhe formation of the yarn package is commenced with a certain minimum length of traverse, which may be of any desired extent, as for example, seven eighths of an inch, this traverse being gradually increased either throughout the entire length of the yarn packageor at some suitable point intermediate the ends thereof, after which the package may be continued with an undiminishcd and preferably uniform traverse. I have obtained excellent results by commencing the yarn package with a traverse of seven eighths of an inch and continuing the increase in the traverse to the upper end of the package where the traverse is one and a half inches or even more. lVithin the scope of my invention, the up and down por-l tions of each traverse may be imparted in equal or unequal times. As hereinafter disclosed, the. upward portion of the traverse occupies a less length of time than the downward portion thereof. 1 ll'hilc l refer to the increase in the traverse as constant, this term is employed generically or broadly to refer to a preferably regular increase in the traverse, such increase occurring at a certain part of each traverse, or if desired at a certain part of each of a series of traverses. I preferably impait the increase to the traverse and the increase to the gain during the lip-stroke of the ring rail and preferably near the end of such rip-stroke and terminating with ythe end of the up-st-roke. Inasmuch as the builder cam rotates preferably at a constant speed, and inasmuch as the ltraverse is regularly increased, it follovss that the speed of the ring rail is correspondingly increased, and inasmuch as the addition to the traverse and the addition to the gain 'are imparted at or near the end of the lip-stroke of the ring rail, it follows that the speed of movement of the ring rail is acceleratedv each time toward the end of its up-stroke-that is, when the yarn is Winding upon the nose of the yarn package. ln accordancefwith the present embodiment of my invention, the increase in the traverse and the increase in the gain are imparted at or near the upper end of/each iup-stroke lof the ring rail. tuch increase in speed of the ring rail co-acts to secure a slight separation of the lturns or winds of the conical layers; that is to say, it prevents the superposition of one coil of a layer directly upon another coil of the same layer. lrl'eretoforeit has been impossible in practice so to speed up the ring rail as to prevent the turns or coils of each conical layer from being superposed more or less throughout the building of the package. This necessarily resulted in the uneven delivery of the yarn from thepackage in unwindine. With my invention, I am enabled to lay a coil of each conical layer against the side of or as close as desired to the preceding coil of that layer, but not overlying the same, thus securing the even paying off of the yarn. In the present embodiment of the invention both the traverse and the gain are effected through the chain or other flexible connection or connections 11. llerein the chain 1l is represented as attached fixcdly at both ends, and the `longitudinal pull imparted thereto bythe builder cam 2 rocks the bell crank lever 19., "i through arcs, the angular extent and position whereof are modified as hereinafter set forth, by mechanism acting upon said chain l1 between the ends thereof to effect the laying of the yarn by traverses Which are maintained undiminished and preferably have 'a regular, uniform increase, and by'gains which are also maintained undiminished and which preferably progressively increase. In defining the chain l1 in the disclosed embodiment of the invention, as fixedly attachedor connected at one end portion to the builder lever or member, or as connected thereto at a fixed distance from the end of said lever or member, and in defining said chain as fixedly attached to the bell crank lever 12, 14:V or corresponding part, l do not precludeA an adjustment or change in the point of connection of said chain ends between different Winding operations, butl thus distinguish from mechanisms vwherein the end of the chain is so connected to a part or device upon the builder lever, as to move along said builder lever during the winding operation.

In order to secure a traverse and a gain of the character above indicated, I have profrom and which maybe widely varied Withmounted upon a pivot orstud 17 a lever 18 having at its lower end a toothed segment 15) lconstantly mcshingwith a gear 20 loose upon a shaft 21, shown niostclearly in Fig. 1l, but havingy a hub 2") extending through said ybracket 16 and having fast thereon a disk. 23 carrying a pawl 2-1, shown inostl clearly in FigfB, andadapted toengage the teeth of a ratchet 25 fast upon said shaft 21 yand adaptedwhen intermittent-ly actuated by said pawl 24 to impart a step by step rotationv to said shaft 2l. Said mechanism constitutes one forni of pick mechanism for imparting step by stepv rotation to the shaft 21.

Itwill be observed that with the piek mechanism arranged as shown, the pick takes place while they riiig'rail is completing the lasty portion 'of its tip-traverse. Since the pickincchanism inv this embodiment of the invention ell'ects both the gain and Athe traverse conjointly with the other velements herein speciiied, it r'esullsthatnot only is the incremental increase in gain added'` just at the time when theiing rail is coinpleting the up portion of its traverse, but also since increase in the traverse increases the general speed of the ring rail during the travherse (since the traverse takes pace in the same time), it follows that the traverse is speeded up just as the ringA rail is completing its tip-stroke.. `These two factors cooperate in the operation of the mechanism to secure the proper laying of the yarn by tending first to keep the coilsoffeach traverse laid well above each other at the top, and second to reduce 4the number of coils laid at the top, i beingl woundlupon that portion of the receiver. that is ofk the smallest diameter, and hence when .yarn breakage is most apt to Aoccur. Thelnumber of coils laid at the top portion of each traverse is reduced `inthe manner"described, inasmuch as the number of coils laid atlany portion of the yarn packagevaries directly as the speed of ther'ring rail in traversing siichportion of the package. The described increase in the speed of the ring rail at the upper portion of each traverse not only tends to compensatefor the inherent tendency of ariiig spinning mechanism to lay inorevwinds of yarn at the 'upper portion of each traverse, that is, on the portion of the yarn receiver that is of the least, diameter-, but it alsotends to coinpensate for the lag of the traveler at the upthat is, when'the yarn is per portion of the rip-stroke of the ringrail, and therefore results in less variation in the speed of the traveler due to its lag at this portion of the 11p-stroke, and not only tends to reduce causes effecting the yarn breakage,

but tends to produce a yarn package wound With more uniform tension throughout.

The lever 18 carrying the segment 19 may be oscillatcd in anyv suitable manner but preferably by the movement of the builder arm lever 8, 9.A Herein .for the purpose I have provided an arm 2li pivoted (zo-axially with the builder lever S," 9 and having at its upper end a lateral extension 27 providedV with transverse slot 2S most clearly indicated in Fig. |Ihe lever 18 extends up-` wardly beyond its pivot 17 as indicated at 29 in Fig. and is'there provided with an open slot 30 receivingr a bolt 30' extending ratchet as indicatedin Fig. 8,' andiproviding means whereby the pawl 2-1 engages the ratchet only at or near the end of each movement of oscillation of the segment 1. vertically mounted in the armV 26 `is a threaded shaft or screw 32, shown most clearly in Fig. 4, and fast thereon isa beveled gear 33meshing with a. beveled gear 3-1 fast upon the shaft 21. Held from turning upon 'said screw 32. is a nut 35 which at thc commencement of the building of the cop is at or near the lower end of the screw 32 and is then gradually elevated by the rotation of the screw from the shaft 21. The nut is here shown as provided with a pair ofk idle rolls 3G over which pass the chains l1, as most clearly indicated in Figs. 2 and 3. The gradual elevation ofthe Vnut 35 and consequent change in'position of the chains 11 effects a constant increase in the traverse, inasmuch' as the movements of the nut 35 upon vthe screw 32 are uniform, and also effects Aa progressive increase in the gain because the described upward movement' of the nut away froml the pivot of the builder lever shortens by progressively increasing 'increments the distancebetween the point of attachment of the chain 11 to thea rm 12 of the bell crank le'verandthe screw 32 measured along the shortest line. Referring to Fig. 17, successive positions 'of the nut- 35 are indicated at A, B, C, D and E. One of the chains 11 is indicated in dotted lines inits various positions, the point of its attachment/to the arm 12 being ysuccessivelyindicated ata, c, d and e. The distances A-R Be-C, C-,Dand'D-Fi represent regular uniform movements of lthe traveler nut. From these movements aregular uniform increase is given to the traverse, but the movement from A. to B effects a movement of the arm 12 from a to t, and the successive movements to C, D and r-,Iifect the movement of the arm 12 progressively increasing distances represented by c, ci and e. This results in an effective shortening of the chain by a progressively increasing amount with a consequent progressive increase in the gain. Moreover, inasmuch as when the ring rail 5 is in its lowermost position, the arm 14 of the bell crank lever is somewhat below and is moving toward the horizontal, it .follows that the linear movements imparted by the arm 14k to the poker arm orrod 15 gradually increase in length due to the movements of said arm 14e uiivardl'y toward the horizontal, in analogy to the increased linear movements imparted by a crank when approaching the horizontal. Such increased lineal' vriovements of the poker arm or rod 15 continue throughout the formation of the base of the yarn package at least. Therefore the tvio factors combine' lto eect a progressively increasing gain throughout the formation of the base of the yarn package and the continued movement of said arm 14 is not there after such as substantially to modify the character of the gain during the further formation of the yarn package.

Although I have referred to the increase in the traverse as constant, it will be understood that thereby is meant a regular increase, inasmuch as in practice the traverse is not increased at all instants of time during the operation of the mechanism, but preferably only at a certain period or part of each traverse, as will be more fully set forth hereinafter.

In order to establish the bottom position of the ring rail and to effect adjustments of such. position, whereby the operation may be commenced with the minimum length of traverse or with a length of traverse greater than the minimum, I may provide any suitable means but have here shown the nut 35 as provided with an adjusting screw 37, which, when the said nut is depressed, bears upon a. horizontal portion or shoulder 38 of the arm 26. After the nut 35y has been yelevated by the rotationI of the screw 32 in the building of the yarn packages, said nut is returned preferably by hand for the formation of the next set of yarn packages. Hereink for this purpose, I have provided the shaft 21 with a crank handle 39 shown in Fig. 3, so that by rotation of said shaft and of the screw 32, the nut 35 may be lowered until it or the set screw 37 contacts With the shoulder' 3S of the arm 26.

The mechanism thus far disclosed constitutes one embodiment of means whereby the traverse may be regularlv or constantly increased from the basal end of the yarn package to its tip yand whereby the gain may be abruptly to increase the gain immediately after the formation of the bunch, or since for other reasons I may Wish to provide for additional gain, I provide means to impart a suddenly increased pull upon ther chains 11. For this purpose, I may provide any suitable means but have here shown the arm 26 as provided with a lever 39 pivotcd thereto at its upper'end at 40 and carrying atits lower end a pair of rolls 12, indicated in Figs. 2 and 3and engaging the under side of the chains 11. The lever 39 may be suitably shaped upon its inner face ls desired, to modify the character of the yarn package, but is here shown as provided btWeen `its upper and lower ends with a beveled shoplder 43, indicated in Fig. 4, Wherewith engages the nut 35 at an appropriate time in the rise`of the latter. This engagement of the nut With the shoulder I3 causes the lever 39 to swing toward the left, viewing Figs. 3 and 4, and thereby to impart a sudden increased pull upon the chains 11, and consequently abruptly to increase the gain of the traverse of the yarn packages. By varying the character of the lever 39, the character, extent or position of this additional gain may be varied. This mechanism for imparting an abrupt pull upon the chains 11 may, of course, be rendered inoperative in any suitable manner or be dispensed with, 1

if I do not Wish to form a feeler bunch, or if for other reasons I do not desire to pirovideadditional gain. or to modify the character of the gain.- This feature is not broadly claimed herein, inasmuch` as the same is broadly claimed in the copending application ofCharles D. Lanning, Serial No. 713,986, filed August 8th, 1912.

In order to terminate the gradual increase in the length of taper of the yarn packages at some suitable point between the ends of the bobbin or yarn receiver instead of continuing such increase to the upper end thereof. I may provide any suitable mechanism.

Herein for the purpose, in Figs. 2., 3 ande, I

have represented the arm 26 as provided with one or more lugs 43 having a vertical slot or slots 44, Within which rolls 45 may be adjustably secured at any suitable point overlying the upper faces of the chains 11. As the nut 35 is gradually elevated and further fiexes the chains 11, the latter con- 'cala layers of uniform extent.

results from tact with kthe lower faces of the rolls 45 at a time depending upon the adjustment of said rolls. This engagement of the chains and rolls terminates the increase of the traverse and therefore compels kthe further building of the yarn packages to be effected in coni- In yother words, -th'eftaper ofthe nested cones constituting the yarn packages vcontinues uniform fromnthe time of engagement of the chains 11 with said rolls 45 to the'upper ends ofthe bobbins or yarn carriers. In that embodimentof thefinvention herein illustrated, the engagement of the chains l1 with the rolls 45 not only terminates the increase in the traverse, but it also abruptly increases the gain.

IVhile any suitablenieans 'may be einploycd to impartfthe gainv orf;incremental advance to the ring rail after each return or doa'nivard traverse, so that each conical layer is begun at an incrementally higher point upon the bobbin or other support, than the conical layerimmediately precedfing, in the disclosed embodiment of the invention,` the effect of the travel of the nut 35 upon the chains 11 is such'that the arcs of movement of the bell'crank lever `12, 14 not only gradually increase in length, providing the gradually increasing lengths of conical layers, 'but the said arcs of movement are gradually advanced contraclockwise so that the rods or'poker arms 15 descend to an incrementally higher point after ea'chupward traverse,` thus providing the gain which, as previously stated, is progressively increased. The increment of gain in the formation of the' conical layers may be such as is found desirable. In practice, I havefound an initial increniental gain of' about one sixtyfourth of an inch to produce excellent results in Winding 40s. The described incremental increase in the lengths of the traverses need not be effected between successive traverses., but may composed of any suitable number of layers. This may be effected by changing the ratchet or in other suitable manner. y

Having reference to the ring frame Wherein the speed lof the spindles and the feed versal of direction of the ring rail necessitates increase of traveler speed, which 1n' crease of traveler speed is a'further load upon the yarn so that vif the lag is excessive yarn breakagey results from any unusual speed in the down stroke of the ring rail.4 It will be seen, therefore, thatl by 'increasing the linear vspeed of the' ring rail progressively, as

an increasing traverse in coninstead be effected between succes# sive series of traverses, said series being stant time, the ring rail is moved each time more rapidly vup and down, which `constantly tends to decrease the number of coils made at the nose of the cap, and therefore, tends to decrease the lag of the traveler at such place. Otherwise stated. the speed of the traveler is maintained more nearly constant and, therefore, the tension on the yarn is maintained more nearly constant. APreferably `the pick controlling the gain and the increase vin traverse is applied during the last portion of the up stroke, whereby this increased speed in linear movement ofthe ring rail is added at such time. As a result the invention makes it possible commercially to operate the ring rail with from 40 or 50 to 100% increase in the number of reciprocations of ring rail; that is. in-r creasing linear speed of the ring rail. The result in winding is a much more uniform tension and'decreased varn breakage inthe ring frame. Having reference to the utilization of such a yarn package which involves .its univinding features, the result is that the `more nearly toa surface at right angles to the axis of the package. By this means as the length of yarn extending from the surfare Wherefrom it is being delivered to the point above the package where draft is being applied to the yarn, tends to increase, and ballooning of the yarn away from the axis of the package tends to increase, this tendency to increased ballooning effect is checked bythe yarn drawing from a surface which tends to approach more and more nearly to a flat surface atright angles to the axis of the package; and when the yarn packageis in a shuttle this'checks the tendency of the yarn to balloon out and Contact with the sides of the shuttle, Which tends to decrease breakage. It is of extreme importance in order to secure the best results that the initial traverse be ofthe minimum length, thus causing the first laid layer to be theshortest, and thatfthese layers gradually increase in length, since thereby in the unwinding of the cop in the Weaving operation, the length of layer gradually becomes less and less from the tip of the `cop toward the ba`se,fand hence there is in`creas` ingly less friction and resistance or drag to the unWinding of the yarn of the successive layers as the distance increases between the `eye rof the shuttle and thepoint at which distance between the weaving operation, are inversely proportional to the distance of each layer from the feeding eye of the shuttle, because of the increasingly greater length of the layers toward the tip of the bobbin or other carrier, there is eleeted a substantially even tension on the varn as laid in the cloth. If the winding begin with a minimum traverse, but with a gain of the full or ultimate value, the result would be that the early layers or traverses would be too long, and the desired results as regardV evenness in the yarn tension would not be secured. By providing, however, a minimum gain as well as a minimuni traverse, the ideal condition is secured, and by increasing the traverse and the gain, the uniformity of tension is not impaired. This result is secured by increasing the gain and more especially by progressively, increasing the gain. The ideal condition is presented by progressively increasing the gain from the minimum, inasmuch as I thereby, in the early layers, obtain very short traverses with the advantages above set forth, and at the same time-each layer begins safely above the commencement of the preceding layer. Furthermore, inasmuch as I start with a minimum traverse and a. minimum gain, the drag due to the distance between the spinning ring and the surface of the cop tube or bobbin is not such as to prevent proper winding. If the initial traverse and gain were, in their aggregate, long, then the effect of the drag would be such that the yarn could not be properly wound. Furthermore by commencing withV a minimum aggregate traverse and gain, I am enabled to reach the full diameter of the yarn package more quickly, and hence more yarn is wound onto the package at its base, without. however, obtaining longer traverses at this point. In my yarn package, as the ia rn is unwound from the base toward the point of any layer, the turns of the yarn are found to be separated. thus preventing one turn of yarn pulling off another, which is not truc lofyarn packages with which I am familiar. In practice. itis unnecessary to clean the bobbin after weaving, since the entire yarn winds off. This is not true of other winds with which I am familiar. I hav also been able to dispense with the conical form of the bobbin at its base usually used heretofore to start the spinning. and hence I am enabled towind a correspondingly additional amount of yarn on the bobbin. In practice, I have discovered that the initial short layers wound in accordance with my invention constitute in themselves a very effective bunch, and that it is not necessary to have a special bunch After forming such substitute for a bunch, the' winding can proceed in the same manner. whereas in most bunchform ing winds with which I am famllla-r, after yment of the yarn package.

yparted thereto.

the formation of a special bunch, there is a skip upward or downward to begin the main winding. Furthermore a satisfactory bunch creates aystrain or drag on the yarn wound below the bunch every time the yarn unwinds past and in contact withthe bunch, and` this creates unevenness inthe tension and tends to break the yarn. I am enabled to wind the yarn upon the carrier with even tension from end to end. Bv decreasing the friction, as hereinbefore setforth, I am enabled to use a heavier traveler, which is a desideratum, inasmuch as the heavier the traveler, the tighter the wind. Further, as the base of the cop is reached in the unwinding (and throughout the whole packageV when the increase in gain is established throughout the whole package) each bottom coil of each layer (having been safely laid by means of the increase in gain over and above the bottom coil of the preceding layer) is permitted to be withdrawn without fouling with and tending to Slough off the preceding layer. These advantages thus secured in the unwinding are of great practical importance in weaving where the yarn Vis subjected to quick intermittent draft spinning of an increased length of yarn thereon. IVhile I may employ any suitableV shape of bobbin, I have found it unnecessary to use a bobbin having a. well defined conical lower end or base to facilitate the commence- Preferably the bobbin is of gradually decreasing diameter from substantially its lower end to its tip, and may be made of smaller diameter than heretofore. If the bobbin is to be provided 5 v:il

with a feeler bunch, I so position .the set screw 37 to establish the basal position of the ring rail that a short traverse isim- At -l8, in Fig. 5, I have represented a bunch formed byv a traverse of substantially three-eighths of an inch and involving but a few conical layers; Im-

mediatelyy after the formation of said bunch,y

the gain is preferably abruptly increased in the manner already described. As here rep` resented, the length of taper of the coils 49 is substantially seven-eighths of .an inch.

Thereafter the gradual increase in theV length of the taper commences, withthe described progressively increasing gain, and I have indicated at 50 1n Fig. 7, a conicall yarn packageis built up as indicated at 51. in Fig. 8, and terminates `with a taper 52,

which is here shown of substantially one land a half inches, but which mayb'eeven more. If desired, however, the maximum taper may be reached at a point more or less short of the tip end of the bobbin and even at the conclusion of they formation of the package base, as previously described, after which the taper is preferably uniform to the tip end of the package. I

It has heretofore been an exceedingly diffieult matterl to 4unwind the ,bunch in the weaving operation. The yarn is exceedingly apt to break when the bunch is reached in the paying off of the yarn, and the weaver then discards the bunch yarn, entailing Y much waste. In order to prevent this breaking of the yarn at the bunch, I provide the open wind 49, the yarn. of which pays off niuch more freely in the spinning operation, and therefore lessens to a very great.

degree the liability of breakage of the `yarn in said bunch, thereby reducing waste.

In Figs. 9 and l0, I. have diagrammati- `cally represented the formation o f'two conical layers, that represented in Fig. 9 being formed during lthe upward traverse of the ring rail' and that represented in Fig. 10 being formed in the succeeding downward traverse. These figures are merely diagrammatic, and are not intended to represent the actual number of coils in either layer. It will be noted thatfthe coils shown in 9 rkare inclined and much fewer in number than the coils 54 shown in Fig. 10 and which are horizontal. In both cases the coils are open. such open wind being more apparent in Fig. 9, because lfewer coils are laid during the upward 'traverse of he ring rail which is toward the drawing rollsk and consequentlyrapid, thany are laid duringthe downward traverse which is away from the drawing rolls and consequently slower bei cause of the greater strain uponthe yarn. VIn either case the coils may be in actual contact, or may be lspaced apart, but do not overlie each other. Inasmuch as the conical layers vformed upon upward traverses are,

preferably all laid in equal periods of time, and the supply from the drawing rolls continues constant, it follows that the coils of the longer conical layers are spaced apart more widely than are those of the shorter conical layers.

In Fig. ll,

the basal portion only of the yarn package I have represented a paper oi' other tube 55 constituting a yarn receiver, and in Figs. 12 and 13 have indicated differ- .gressive increase in the gain, so that the base of the yarn package when wound upon a paper or other tube 55 possesses exteriorly the characteristic convex form represented at 57.r Such formation is due to the fact that .each bottom coil of each layer is laid safely up and above the bottom coil of the preceding layer. The described `increasing traverse and gain need not be continued beyond the formation of the basal portion lof the yarn package, but in Fig. 13 I have represented a completed yarn package 58,wliere in the described constantlyor uniformly increasing traverse and `progressively increasing gain are continued'to the upper or tip end of the yarn package. In Fig. 14,1

have represented a wooden bobbin 59 having formed thereon the basall portion 60 of a yarn package devoid of a feeler bunch but wound with a constant or regularly increasing traverse and a` progressively increasing I Thile I have herein represented my invention as embodied in mechanism operat- 'ing by take-up of the flexible connection,

element or chain, in'y invention is not limited to use in a mechanism operating byv bination with means for increasing the trav-v erse and specifically infcombi'nation with means for uniformly increasing the traverse throughout the formation of the base and preferably throughout the formation of the whole package.

W'hile I have herein referred to the upward and the downward traverse. it is evident that these terms are descriptivcmerely of that embodiment of my invention selected for illustration, and that the yarn packages may be wound or formed in an upright or any other desired position within the scope of my invention.

LHaving thus described onel illustrative embodiment of my invention, I desire it to be understood that although specific terms are employed, they are used in a generic and descriptive sense and not for purposes of limitation, the scope of the invention bcing set forth in the following claims.

Claims: y,

l. In a traverse motion for winding yarn iet on yarn receivers, a `rotating yarnreceiver,

yarn 'guiding means cooperating with the I receiver', a buildei` element, a builderimem bei' acted on by saideleinent7 atlexible mem--r ber having a fixed point of connection with said member and operi'itively associated 'ivitlfr said yarn guiding means, and governing moans `carried by 'said member andiactive upon said flexible member betweeniits endsv to eiiect through 4said member an increasing shiitor gain ofthe Ltraverse movement along` the Ayarn receiverl and 'an increasing'ftraverse movement. i f f l i 2. In atravers'e motion-1 tor Winding yarn on ya rn v'ref eivers, a rotating! yarn receiver,

a ring rail, ring rail lifting means,-a'builder;

element, a builder ai'ni acted on by said ele-- ment, a flexible connection attachedgtozsaid ringiail lifting means andconnectedto saidL ff `rail lifting means, arcta-table builder-,ele-

ment', anoscillatory builder arm adapted to be acted Ion by the latter,- lanutlcarried by fsaid arm, a flexible connection adaptedzto be *acted-on by'said nut.y betweenl its ends and,

securedy to'. saidring rail'lifting `means and ilixedly-connected to saidbuil e lir'ailafor aportion only of the length ofthe wformer, andl including a i ,rotatable builder .elemen'tgf a: ybuilder ilever, and a exible conlaiin ata fixed distance frointtheendof the lat- E ter, a iid governingineans mounted uponfsaid builder army and active uponisaidv flexibler on yarn r`receivers, arotating 'yarn ring rail lifting means .and'connec'ted' to ,saidy arm at a fixed distancefrointlie :endfof the latter, and means mounteduponisaidbuilder yarmy and afctivefupon said flexible connection to shorten the eliectiveflengtli'of saidfcon-` #cam 2,. afbui'lder 4lever^8 having an arm 26,v

nection.

4.' In aptraverseinotioirfor Winding yarn i on yarnreceivers, a rotatingfyarn receiver,

" a ring rz'iil,"ring-rail lifting means, a builder element, a builder'arm acted onby` said clef, ment', a l lexible connection attached to said ring rail liftingmeans and connected to said latter` and `governing means/mounted upon said builder afi-ni and active upon -saidzI llevay on yarn receiverscomprising, in combinaible connection between its ends toeforin a bighty therein :of progressively Aincreasing aciitenes's. ,f i i 5.y yA traverse motion for Winding yarn/on to oscillatey in planes lcngtlm'ise of the ring yarn receivers comprising', in combination,

rotatable spindles, ay ring rail, ring rail lift- W edly :connected to ,each of lsaid levcrs,lsaid builder lever, liavingftivo arms, on@y yldapted `i20 and thefsccond ariirextending upwardly toing means, al rotatable' buildeielement,an

oscillatorybuilder arni adaptedfto beacted on by the latten* a nutlcarricd'byfsaid rarrn f and. movable.outwardly insubstantially the s plane of, oscillation ot said arm; a flexible s connection adaptedto be acteduponby said-ff nut between its ends and seeuredlto said ring rail lifting means and' fixedlyfconnected to said builder arin,talnd` means ivard travel to saidiiut. e i f 6. A traverse motion for Winding yarnl yon yarn` receivers' comprising in combination, rotatable vspindles, 'a ring rail, i ring tor impart@ outf portion ixedly vconnected to said, builder. levere8, a nut mounted upon said threadl 4edishaft and active upon said llexible con-v ari'n ata fixed' distanee'froni the end ofthe1 nectionsito the ring railandhaving a fixedy connectiontothe builder lever, and traverse of the rinigrail andspindles.`

8. A-,ti'averse motion for Winding yarn on s ,yarn lreceivers comprising in combina-y cam 2, a: builder levervS ,having an arm 2G,

a bell ,crank lever 12, 14, a yflexible connes-,S

`tionf-ftixedlyconnectedrto saidlevers, and a vnut movable along Asaid arm 26 tosshorten f ithe ellective K length of said flexible connection.- Y. v

9.=AJ traverseamotion. for -Winding 'yarny on yarn, receivers comprising in combina-k Altion,fi'otatable spindles, a ring rail, a builderv a threaded shaft 32; mounted in said arm, a,

bell crank lever` l2, ll`l a flexible connection l1 between saidlevers and havingrone end nection, and means to impart movement to said nut;y alongisaid shaft.

tion, rotatable spindles, a ringrail, a rotata l'ble builder element, a builder lever and a ring-rail-rod enafin lever both mounted 2.1 D b d ,i 7

frame, a flexible element having an end .fix-y toibe acted upon said builder element 11. A; traverse motion for Winding yarn on yarn receivers, comprising, in combination, y,rotateble ,spindles, a ring rail, a rosv tat/able, builder element, a builder lever and ycontrolling means upon `said builder lever `and engaging said liexibleconnection toincrease tlieglengtlil ofsaid Vtraverse movements iandftli'ergain of said movements at substan-y tiallyitheupper end of the relative up `stroke y ytion,:rotatable spindles,fa ringy rail, a builder l10o A In testimony whereof, I have signed my name to this specification, in the presence of two subscribing Witnesses. A

J OHN- V. CUNNIFF;

Witnesses:

EUGENE S. SULLVAN, NICHOLAS HATHAWAY. 

